{"schema_version":"onlylabs.public_signal.v1","title":"Baseten Job: Post-Training Research Engineer","description":"Baseten job signal with public source context, captured evidence pages, related signals, and category-scoped analysis context.","url":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e","json_url":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e/signal.json","generated_at":"2026-06-11T04:12:56.986448+00:00","org":{"slug":"baseten","name":"Baseten","category":"neocloud","category_label":"Neocloud","dossier_url":"https://onlylabs.fyi/labs/baseten","dossier_json_url":"https://onlylabs.fyi/labs/baseten/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e","signal_json":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e/signal.json","source":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","lab_dossier":"https://onlylabs.fyi/labs/baseten","lab_dossier_json":"https://onlylabs.fyi/labs/baseten/dossier.json","analysis":"https://onlylabs.fyi/analysis/baseten","analysis_json":"https://onlylabs.fyi/analysis/baseten/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/baseten/evidence.json","category":"https://onlylabs.fyi/neoclouds","category_json":"https://onlylabs.fyi/neoclouds.json","category_feed":"https://onlylabs.fyi/neoclouds/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json?category=neocloud","topic":"https://onlylabs.fyi/topics/hiring","topic_signals_json":"https://onlylabs.fyi/topics/hiring/signals.json?category=neocloud","topic_feed":"https://onlylabs.fyi/topics/hiring/feed.xml?category=neocloud","data_business":null},"answer_pack":{"answer":"Baseten opened Post-Training Research Engineer (San Francisco). This hiring signal is demand evidence for teams, locations, and technical bets being staffed. High-signal details: team Post-Training · location San Francisco · Routine job opening at a startup. onlylabs links this event to 1 captured evidence page and 6 related job signals.","signal_desk":"hiring","source_context":{"source_url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","source_host":"jobs.ashbyhq.com","occurred_at":"2026-03-23T22:07:52.567+00:00","first_seen_at":"2026-06-05T22:32:09.249223+00:00","date_source":"ashby.publishedAt","context":"San Francisco"},"context_markers":[{"label":"Lab","value":"Baseten","source":"signal"},{"label":"Signal desk","value":"hiring","source":"signal"},{"label":"Source host","value":"jobs.ashbyhq.com","source":"source"},{"label":"Team","value":"Post-Training","source":"signal"},{"label":"Location","value":"San Francisco","source":"signal"},{"label":"ATS","value":"ashby","source":"source"},{"label":"Notability","value":"Routine job opening at a startup","source":"signal"},{"label":"Watch term","value":"RL environments","source":"evidence"},{"label":"Watch term","value":"Infrastructure","source":"evidence"},{"label":"Watch term","value":"Safety and alignment","source":"evidence"},{"label":"Watch term","value":"Agents and tool use","source":"evidence"}],"evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5"],"related_signals":6,"has_source_url":true,"latest_page_fetched_at":"2026-06-11T04:12:56.986448+00:00"},"data_business":{"matches":false,"lanes":[],"matched_terms":[],"score":null,"reason":null},"agent_handoff":{"signal_json":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e/signal.json","dossier_json":"https://onlylabs.fyi/labs/baseten/dossier.json","analysis_json":"https://onlylabs.fyi/analysis/baseten/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/baseten/evidence.json","topic_signals_json":"https://onlylabs.fyi/topics/hiring/signals.json?category=neocloud","topic_feed":"https://onlylabs.fyi/topics/hiring/feed.xml?category=neocloud","category_signals_json":"https://onlylabs.fyi/signals.json?category=neocloud","data_radar_json":null,"opportunities_json":null},"analysis_playbook":{"objective":"Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.","evidence_focus":["role title","team or function","location","job description","data, eval, infra, safety, product, and GTM terms"],"extraction_questions":["Which teams are hiring repeatedly?","Which locations or hubs are becoming more important?","Which roles imply data, evaluation, infrastructure, or platform spend?","Which labs have hiring signals without a fresh standing analysis?"],"signal_questions":["What demand signal does this role create for teams, locations, infrastructure, evals, or data workflows?","Which teams are hiring repeatedly?","Which locations or hubs are becoming more important?","Do the 6 related job signals show a repeated pattern?"],"output_fields":["org","team","location","role_theme","evidence_url"],"data_business_relevance":"Data-business lane extraction is scoped to frontier labs; for this category, keep conclusions tied to category-specific strategy, source evidence, and follow-up questions.","required_sources":[{"label":"signal_json","url":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e/signal.json","required":true},{"label":"source","url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","required":true},{"label":"dossier_json","url":"https://onlylabs.fyi/labs/baseten/dossier.json","required":true},{"label":"analysis_evidence_json","url":"https://onlylabs.fyi/analysis/baseten/evidence.json","required":true},{"label":"topic_signals_json","url":"https://onlylabs.fyi/topics/hiring/signals.json?category=neocloud","required":false},{"label":"data_radar_json","url":null,"required":false}],"expected_output":["one-paragraph source-grounded interpretation","category-specific implication","confidence and missing evidence","recommended next source to inspect"],"prompt_seed":"Using only the linked onlylabs JSON, captured source context, and cited evidence, analyze Baseten's job signal \"Post-Training Research Engineer\" for neocloud strategy."},"semantic_triples":[{"subject":"Baseten","predicate":"opened","object":"role Post-Training Research Engineer","text":"Baseten opened role Post-Training Research Engineer."},{"subject":"Post-Training Research Engineer","predicate":"is classified as","object":"job signal","text":"Post-Training Research Engineer is classified as job signal."},{"subject":"Post-Training Research Engineer","predicate":"belongs to","object":"hiring desk","text":"Post-Training Research Engineer belongs to hiring desk."},{"subject":"Post-Training Research Engineer","predicate":"has context","object":"San Francisco","text":"Post-Training Research Engineer has context San Francisco."},{"subject":"Post-Training Research Engineer","predicate":"has evidence coverage","object":"1 captured evidence page","text":"Post-Training Research Engineer has evidence coverage 1 captured evidence page."},{"subject":"Post-Training Research Engineer","predicate":"has captured page count","object":"1","text":"Post-Training Research Engineer has captured page count 1."},{"subject":"Post-Training Research Engineer","predicate":"has readable page count","object":"1","text":"Post-Training Research Engineer has readable page count 1."},{"subject":"Post-Training Research Engineer","predicate":"has related signal count","object":"6","text":"Post-Training Research Engineer has related signal count 6."},{"subject":"Post-Training Research Engineer","predicate":"has analysis playbook objective","object":"Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.","text":"Post-Training Research Engineer has analysis playbook objective Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.."},{"subject":"Post-Training Research Engineer","predicate":"has source host","object":"jobs.ashbyhq.com","text":"Post-Training Research Engineer has source host jobs.ashbyhq.com."},{"subject":"Post-Training Research Engineer","predicate":"has lab","object":"Baseten","text":"Post-Training Research Engineer has lab Baseten."},{"subject":"Post-Training Research Engineer","predicate":"has signal desk","object":"hiring","text":"Post-Training Research Engineer has signal desk hiring."},{"subject":"Post-Training Research Engineer","predicate":"has source host","object":"jobs.ashbyhq.com","text":"Post-Training Research Engineer has source host jobs.ashbyhq.com."},{"subject":"Post-Training Research Engineer","predicate":"has team","object":"Post-Training","text":"Post-Training Research Engineer has team Post-Training."},{"subject":"Post-Training Research Engineer","predicate":"has location","object":"San Francisco","text":"Post-Training Research Engineer has location San Francisco."},{"subject":"Post-Training Research Engineer","predicate":"has ats","object":"ashby","text":"Post-Training Research Engineer has ats ashby."},{"subject":"Post-Training Research Engineer","predicate":"has notability","object":"Routine job opening at a startup","text":"Post-Training Research Engineer has notability Routine job opening at a startup."},{"subject":"Post-Training Research Engineer","predicate":"has watch term","object":"RL environments","text":"Post-Training Research Engineer has watch term RL environments."}]},"intelligence":{"signal_desk":"hiring","answer":"Baseten opened Post-Training Research Engineer (San Francisco). This hiring signal is demand evidence for teams, locations, and technical bets being staffed. High-signal details: team Post-Training · location San Francisco · Routine job opening at a startup. onlylabs links this event to 1 captured evidence page and 6 related job signals.","semantic_triples":[{"subject":"Baseten","predicate":"opened","object":"role Post-Training Research Engineer","text":"Baseten opened role Post-Training Research Engineer."},{"subject":"Post-Training Research Engineer","predicate":"is classified as","object":"job signal","text":"Post-Training Research Engineer is classified as job signal."},{"subject":"Post-Training Research Engineer","predicate":"belongs to","object":"hiring desk","text":"Post-Training Research Engineer belongs to hiring desk."},{"subject":"Post-Training Research Engineer","predicate":"has context","object":"San Francisco","text":"Post-Training Research Engineer has context San Francisco."},{"subject":"Post-Training Research Engineer","predicate":"has evidence coverage","object":"1 captured evidence page","text":"Post-Training Research Engineer has evidence coverage 1 captured evidence page."}]},"signal":{"id":"aa5c8dba-7c14-466e-9654-f05dc5eab45e","url":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e","json_url":"https://onlylabs.fyi/signals/aa5c8dba-7c14-466e-9654-f05dc5eab45e/signal.json","source_url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","title":"Post-Training Research Engineer","summary":"Baseten opened a hiring signal. onlylabs watches roles as demand indicators for teams, locations, and technical bets.","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-03-23T22:07:52.567+00:00","first_seen_at":"2026-06-05T22:32:09.249223+00:00","date_source":"ashby.publishedAt","evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5"]},"facets":{"location":"San Francisco","team":"Post-Training","ats":"ashby"},"traction":{"github_stars":null,"hn_points":null,"hn_comments":null,"hn_story_id":null,"hf_downloads":null,"hf_likes":null},"data_radar":null},"primary_evidence_page":{"url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","final_url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","title":"Post-Training Research Engineer","http_status":200,"content_type":"application/json","capture_method":"plain","fetched_at":"2026-06-11T04:12:56.986448+00:00","bytes":14170,"raw_path":"183d842ed6c103ea037e6ab16f15eacdcd42ab210d687d805a1927269441f324.json","content_hash":"e522c6320c04f5a1a6e21ab71694e9ffdb468a5a6a3c383d7566b9d1d328394a","excerpt_chars":1200,"truncated":true,"excerpt":"Post-Training Research Engineer Team: Post-Training Location: San Francisco Employment type: FullTime Workplace type: Hybrid Remote: yes Published: 2026-03-23T22:07:52.567+00:00 ABOUT BASETEN Baseten powers mission-critical inference for the world's most dynamic AI companies, like Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma and Writer. By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing quickly and recently raised our $300M Series E https://www.baseten.co/blog/announcing-baseten-s-300m-series-e/, backed by investors including BOND, IVP, Spark Capital, Greylock, and Conviction. Join us and help build the platform engineers turn to to ship AI products. We are looking for an engineer with strong experience in machine learning and solid foundations in maths and computer science to join our growing Post-Training team at Baseten. Custom models are instrumental to the success of Baseten customers. By inference volume, the overwhelming majority of traffic at Baseten is to and from models that have been post-trained in some way, whether..."},"evidence_pages":[{"url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","final_url":"https://jobs.ashbyhq.com/baseten/68328a94-f785-463b-a3d7-b0dfc11839b5","title":"Post-Training Research Engineer","http_status":200,"content_type":"application/json","capture_method":"plain","fetched_at":"2026-06-11T04:12:56.986448+00:00","bytes":14170,"raw_path":"183d842ed6c103ea037e6ab16f15eacdcd42ab210d687d805a1927269441f324.json","content_hash":"e522c6320c04f5a1a6e21ab71694e9ffdb468a5a6a3c383d7566b9d1d328394a","excerpt_chars":1200,"truncated":true,"excerpt":"Post-Training Research Engineer Team: Post-Training Location: San Francisco Employment type: FullTime Workplace type: Hybrid Remote: yes Published: 2026-03-23T22:07:52.567+00:00 ABOUT BASETEN Baseten powers mission-critical inference for the world's most dynamic AI companies, like Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma and Writer. By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing quickly and recently raised our $300M Series E https://www.baseten.co/blog/announcing-baseten-s-300m-series-e/, backed by investors including BOND, IVP, Spark Capital, Greylock, and Conviction. Join us and help build the platform engineers turn to to ship AI products. We are looking for an engineer with strong experience in machine learning and solid foundations in maths and computer science to join our growing Post-Training team at Baseten. Custom models are instrumental to the success of Baseten customers. By inference volume, the overwhelming majority of traffic at Baseten is to and from models that have been post-trained in some way, whether..."}],"related_signals":[{"id":"9fdd79ab-e89f-4aee-94e6-cd1cabd7542b","url":"https://onlylabs.fyi/signals/9fdd79ab-e89f-4aee-94e6-cd1cabd7542b","source_url":"https://jobs.ashbyhq.com/baseten/2d78fdcf-53e1-45d3-a047-2aefb5ad3153","title":"Product Manager, Developer Experience","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-10T20:43:54.991+00:00","first_seen_at":"2026-06-11T07:00:49.949121+00:00","date_source":"ashby.publishedAt"},{"id":"9309facb-aea2-4492-bd58-9f4cec23c926","url":"https://onlylabs.fyi/signals/9309facb-aea2-4492-bd58-9f4cec23c926","source_url":"https://jobs.ashbyhq.com/baseten/7d9d5a1f-3834-434e-b22f-4bd62317be3c","title":"Technical Program Manager, Infrastructure","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-10T01:04:24.882+00:00","first_seen_at":"2026-06-10T07:01:01.428266+00:00","date_source":"ashby.publishedAt"},{"id":"456a26b8-1d15-4aa8-8ef9-5509ab3feac8","url":"https://onlylabs.fyi/signals/456a26b8-1d15-4aa8-8ef9-5509ab3feac8","source_url":"https://jobs.ashbyhq.com/baseten/0870ed34-7365-4b9f-a50a-481783b8c266","title":"Engineering Manager, Cloud Platform","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-09T18:23:27.319+00:00","first_seen_at":"2026-06-10T07:01:01.428266+00:00","date_source":"ashby.publishedAt"},{"id":"66e5e498-c460-4c04-b4fa-6cd9bab21eda","url":"https://onlylabs.fyi/signals/66e5e498-c460-4c04-b4fa-6cd9bab21eda","source_url":"https://jobs.ashbyhq.com/baseten/1e721b74-58b9-4b03-ac0f-4b1e5c32342e","title":"Engineering Manager, Internal Platform","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-09T18:12:27.736+00:00","first_seen_at":"2026-06-10T07:01:01.428266+00:00","date_source":"ashby.publishedAt"},{"id":"bdf68b9a-56a7-427a-9d90-5401af51c02b","url":"https://onlylabs.fyi/signals/bdf68b9a-56a7-427a-9d90-5401af51c02b","source_url":"https://jobs.ashbyhq.com/baseten/aae72bd3-6f75-4238-9741-95fec11facb9","title":"Engineering Manager, Runtime Fabric","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-09T18:02:59.642+00:00","first_seen_at":"2026-06-10T07:01:01.428266+00:00","date_source":"ashby.publishedAt"},{"id":"ad886de5-9ed0-420b-8fd8-5266d3eff536","url":"https://onlylabs.fyi/signals/ad886de5-9ed0-420b-8fd8-5266d3eff536","source_url":"https://jobs.ashbyhq.com/baseten/71a011b6-0f17-4c0a-b0ba-38deffce1adb","title":"Strategic Finance Associate / Sr. Associate","context":"San Francisco","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"baseten","name":"Baseten","category":"neocloud"},"occurred_at":"2026-06-08T18:26:02.827+00:00","first_seen_at":"2026-06-09T07:00:38.127008+00:00","date_source":"ashby.publishedAt"}]}